Liver mass confusion in OVCA patient....

Mum OVCA stage 3 March 2005, remission currently BUT with liver mass.

We were told by one Dr the liver mass might be cancer returned but then another person has said that as mums CA125 is only 31 (was 512 when first ill March 2005) it couldn't be cancer in the liver.
We were also told that as mum didn't have any symptoms and that it was an isolated mass in the liver its unlikely to be cancer.

We feel that we are going round in circles and don't know what to do.

Can anyone shed any light on this.

Mum had an MRI scan last week and we get the results of that on tuesday.

Thanks